mirror of https://gitee.com/openkylin/qemu.git
d87aa13803
Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so
the following trace event will not fire when solely enabled by SystemTap
or LTTng UST:
if (trace_event_get_state(TRACE_MY_EVENT)) {
str = g_strdup_printf("Expensive string to generate ...",
...);
trace_my_event(str);
g_free(str);
}
Add trace_event_get_state_backends() to fetch backend dstate. Those
backends that use QEMU dstate fetch it as part of
generate_h_backend_dstate().
Update existing trace_event_get_state() callers to use
trace_event_get_state_backends() instead.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170731140718.22010-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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|---|---|---|
| .. | ||
| Makefile.objs | ||
| control-internal.h | ||
| control-target.c | ||
| control.c | ||
| control.h | ||
| event-internal.h | ||
| ftrace.c | ||
| ftrace.h | ||
| mem-internal.h | ||
| mem.h | ||
| qmp.c | ||
| simple.c | ||
| simple.h | ||